Protective goggle



Patented June 22, 1%? 2,084,897

UNITED, STATES PATENT OFFICE PROTECTIVE GOGGLE Joseph B. Dym, Pittsburgh, Pa., assignor to Mine Safety Appliances Company, Pittsburgh, Pa a corporation of Pennsylvania Application December 17, 1935, Serial No. 54,820

4 Claims. ('01. z-14) This invention relates to goggles for use in proa thin layer 8 of mica or the like material adapted tecting the eyes in atmospheres injurious thereto, to minimize or avoid fogging of the eye-piece and a major object of the invention is to provide when the goggle is worn. The mica disc 8 is prefa protective goggle ofthe type referred to which erably adhesively connected to glass plate 5, for

is of simple construction, light, inexpensive, efl'iinstance by a thin layer l of gelatin or the like. 5 ciently protects the eyes against injurious atmos- A major feature of the invention resides in pheres, and is provided with means for estabthe provision of means for establishing atmoslishing atmospheric pressure within the goggle pheric pressure within the face-piece while the while excluding injurious atmospheres. goggle is being worn. To this end there is dis- The invention may be described with reference posed above and centrally between the eye-pieces 10 to the accompanying drawing in which Fig. 1 is a forwardly projecting tubular portion 8 adapted a front elevational view of the preferred embodito receive a canister C containing material for ment of the invention; Fig. 2 a fragmentary rear removing injurious constituents from air passed elevational view of the goggle; Fig. 3 a crosstherethrough. The interior surface of the facel5 sectional view taken on line HIIII, Fig. 1; Fig. piece above the eye-pieces and rearwardly of pro- 4 a cross-sectional view through one of the eyejection 8 is forwardly oifset to provide a pair of pieces, taken on line IV-IV, Fig. 1, and enlarged depressions l0, Figs. 2' and 5, each of which is for clarity in illustrating constructional details; connected with tubular portion 8 by a port ll. Fig. 5 a cross-sectional view taken on line V-V, That is, a port it leads from each side of portion 23 Fig. 1; Fig. 6 an enlarged view of a portion of 8 to the adjacent depression l0. Tubular mem- Fig. 3; and Fig. '7 a view of a portion OfFig. l her 8 thus establishes communication between illustrating modified constructional details. the exterior atmosphere and the interior of the The protective goggle provided by this invenface-piece, and blocking of ports ll through contion comprises a face-piece of conventional or tact of the interior of the face-piece with the desired goggle form and construction which is face 01' the wearer is avoided by situating the adapted to make air-tight fit with the face of ports within offsets iii. the wearer. The face-piece is provided with a Canister C is resiliently retained in tubular passage between the exterior atmosphere and the portion 8 for removing injurious constituents of interior of the goggle, and with means interposed the external atmosphere asit passes into the in the said passageway for eliminating injurious face-piece. The canister may take various forms. 30 or undesirable constituents of the exterior atmos- That shown comprises a tubular casing 9 of such phere when it passes through the passageway into diameter as to be tightly gripped by the wall of the goggle. Although the passageway may be tubular projection 8. To insure against accicontinuously open for continuously maintaining dental dislodgment of the canister, casing 8 is 5 atmospheric pressure within the goggle, it is presuitably provided with outwardly projecting ribs ferred to provide means normally closing the pasl2. A charge of air-purifying material I3 is held sageway and which may be actuated at interin the canister between end screens [4 and i5. mittent intervals to permit the establishment of Material I3 is selected according to the deleteriatmospheric pressure within the goggle. ous constituent present in the atmosphere. For Having reference to the embodiment shown in instance, where the goggle is to be worn in bat- 40 the drawing, the goggle comprises a face-piece I tery rooms of submarines equipped with Edison of conventional form, to overlie and surround the storage cells soda lime may be used. eyes. The face-piece is constructed from flexible The resilient engagement of the exterior of the material, such as rubber, adapted to yieldingly canister by the wall of tubular member 8 necesengagepthe face of the wearer and make an airsitates passage of air through the canister so that 5 tight fit therewith. The face-piece is provided all of the air entering the face-piece must pass with a pair of eye-pieces 2 disposed in grooves 3 through the purifying material II. With a canformed in the outer ends of forwardly projecting ister mounted in this manner there is continuous portions 311 of the face-piece, which may be seen establishment of atmospheric pressure within the 60 best in Figs. 3 and 4. The eye-pieces are retained goggle. For many purposes, however. it is unnecin position by inwardly projecting flanges 4 and essary to have the passage open continuously and 4a integral with portions in. In the preferred it is really preferable to close the passageway and embodiment of the-invention the eye-pieces are canister against access of the external atmosformed of a relatively thick sheet of glass 5, Fig. phere to conserve the air-purifying material, by 5 4, to the inner surface of which there is applied means adapted to permit intermittent passage of air through the canister at intervals as need be to establish the atmospheric pressure therein.

As shown in Figs. 3 and 6, the forward end 01 the canister is exteriorly threaded at IE to receive a cap member 11 provided with cooperating threads. The cap is provided with a central aperture I8 through which there projects the stem [9 of a valve member 20 adapted toseat against the inner surface of cap H to prevent 10 ingress of the external atmosphere. Valve 20 is normally urged into contact with cap I! by a coil spring 2| mounted between screen It and valve 20. To insure tightness of the valve when closed, its outer face is provided with a gasket 22.

A gasket 23 may also be positioned between cap l1 and the end of the canister.

In this embodiment of the invention it will be observed that spring 2| normally biases the valve to close aperture 18 and thus preventaccess of 20 air to the canister, but when it is desired to establish atmospheric pressure within thegoggle the valve 'may be depressed by manually pressing stem 19 inwardly thus permitting air to flow through the canister and into the face-piece, the

injurious constituent in the atmosphere being removed by material IS in the canister.

I1 atmospheric pressure is to be continuously established in the embodiment just described it is necessary to continuously depress valve 20. In

' some instances it may be desirable to provide a valve which may be either normally closed or locked into open position. Such an embodiment is illustrated in the modification shown in Fig. 7. As there shown cap Fla is provided with a pair of diametrically opposed slots 24 radiating from aperture [8a, and stem l9a of the valve is provided with a pair of outwardly projecting diametrically opposed pins 24a. In this form the valve will normally be closed, as in the preceding embodiment, or it may be opened against spring pressure, or again it may be locked in open position by rotating stem l9a. to bring the pins 24a into register with the openings 24 in the cap, then depressing the valve and turning it slightly whereby the pins 240. are retained bythe inner face of the cap.

In some instances it may be desirable to provide'the goggle with means for closing the nasal passages. As illustrated in Fig. 1, the lower portion of the face-piece is shaped to overlie the nose and is provided with a wire spring nose-clip 25 whose arms pass through laterally projecting lugs 26 that receive and hold the nose-clip to the goggle. The nose-clamping members 21 of the clip are retracted when the goggle is applied to the face by squeezing the sides 28 of the clip together, and after the goggle is in place release of the pressure permits the members 21 to engage the sides of the face-piece, and press against the a nostrils.

For fastening the goggle upon the head it is provided with a strap member 29 whose ends are connected to lugs 30 integral with the sides or the face-piece. The strap member may be;

provided if desired with means 3| for adjusting its length.

According to the provisions of the patent statutes, I have explained the principle and construction of my invention, and have illustrated and described what I now consider to represent its best embodiment. However, I desire tohave it understood that, within the scope of the appended claims, the invention may be practiced otherwise than as specifically illustrated and described.

1 I claim:

1. A protective goggle for use in atmospheres containing an injurious constituent comprising the combination of a goggle face-piece of flexible material adapted yieldingly to engage the face about the eyes to make and maintain an airtight fit therewith, a passage through the facepiece, means associated with said passage for removing said constituent from atmosphere flowing through said passage, and a closure member associated with said passage normally excluding the external atmosphere and movably mounted for establishing communication between the atmosphere and the interior of the face-piece at desired intervals to thereby establish atmospheric pressure in the face-piece without access of said injurious constituent.

2. A protective goggle for use in atmospheres containing an injurious constituent comprising the combination of a goggle face-piece of flexible material adapted yieldingly to engage the face about the eyes to make and maintain an airtight fit therewith, a passage through the facepiece, a canister removably associated with said passageand provided with purifying material for removing said constituent from atmosphere flowing through said passage and a spring biased closure member associated with the outer end of said passage for normally excluding the external atmosphere and to establish connection.

between the atmosphereand the interior of the face-piece when opened to thereby establish atmospheric pressure in the face-piece without access of said injurious constituent.

3. A protectivegoggle for use in atmospheres containing an injurious constituent comprising the combination of a goggle face-piece of flexible material adapted yieldingly to engage the face about the eyes to make and maintain an airtight fit therewith and'provided with a pair of eye-pieces, a passage through the face-piece disposed above and between said eye-pieces, means associated with said passage for removing said constituent from air flowing through said passage. a valve member movably associated with the outer end of said passage, and a spring acting on said'valve to normally closeit and exclude atmosphere from the passage, the valve when opened establishing communication between the atmosphere and the interior of the face-piece to thereby establish atmospheric pressure in the face-piecewithout access of said injurious constituent. I

4. A protective goggle for use in atmospheres containing an injurious constituent comprising the combination of a goggle face-piece of flexible material adapted yieldingly to engage the face about the eyes to make and maintain an airtight jlt therewith and provided with a pair of eye-pieces and with a tubular member projecting forwardly above and between said eye-pieces, the

wall of said member having a bore connecting it with the interior'of the face-piece, a canister containing atmosphere-purifying material removably disposed insaid tubular member, a closure member associated with the outer end of said canister, a valve movably associated with said closure, and spring means acting on said valve to normally exclude air from said canister, opening of said valve establishing communication between the atmosphere and the interior of the face-piece and thereby establishing atmospheric pressure in the face-piece without access of said injurious constituent.

JOSEPH B. pm 

